the hallmark or clues that we normally associate with al qaeda attacks. >> it doesn't. no one is claiming responsibility. they weren't enormous bombs. but they are both like bombings in iraq and in afghanistan. those smaller bombs, and plus the 1 seconds apart. the two bombs, that's really a hallmark of somebody who knows what they're doing and they want to elicit maximum terror. i mean, think about the word "terror," the people here, innocents in their shorts and t-shirts watching a wonderful event, and right now, we sit here. when i flew in last night, george, i was looking over the city and i thought, somewhere in that city is someone who just did a horrible, horrible thing. >> and, martha, for you coming in last night, i was coming home while you reported from boston for many years, you know what this marathon, what this day, patriots day means to this city of boston. >> it is just the most wonderful coming together in this city. you know, this is a big city, but it really is a small town and i am already hearing terrible stories of people who have a friend of a friend who lost a leg.